Pressure-regulating valve.



A. W. CASH Q E. F. LEMMON.

PRESSURE REGULATING VALVE.

mmc/mon msn om. 1s, 1915,

[N VEN 7352". 5.

LVTNESSES:

ai. s ,e

Ell/EliSURE-REGULTING 'VLLVE .agiplication le. october 1t, 193:3.

,ii relates to improvements, in tliat class of essuie regulating valves, commonly known diaphragm type, or tliapliragni operated, :iii Wliieli tlie reeluceel and regulated 'pressure is causerl to act against a spriiiggM or a Weight loaclecl (liapiiragni, the degree of acljustinent, or Weight acting aeainst tlie opposite sicle of tlie diaphragm, pi'etleteimining' tlie regulatecl `delivery pressure in accorclanoe With requirements.

i ln all pressure regulating' valves for fluid service, Wlietiier of tlie diaphragm or distinctive piston operated type, the common fault, or Weakness inherent resides in the valve seat and valve seat clislr Wliioli soon` becomes scoreil und Worn flue to both erosive ariel corrosive action of the various fluids being)r conti-oiled by the valve, with tlie coninion result, that ivlien all of tlie outlet flow has ceased, tbe valve incl seat elisir (lo not close tight enough to prevent more or less leakage Wbieli will quite generally allovv the rediieecl, or regulated pressure to gradually increase until it is equal, or nearly equal to the initial or high pressure. This undesirable conflition is further hastened and brought about by reason ,of small partioles of foreign matter in the pipes or conduits ivliic'i convey the fluids or liquids, suoli as grit, sami, scalo, nietal cuttings, li ings, anol rust, mineral substances, etc., tliese foreign substanees becoming stopped ancl loolgecl. in the restricted opening between the valve seat and seat elisir, vWbicli restricted opening is entirely essential to tbe proper operation of tbe 'if'alve in causing a reoluctioii of 'pressure bv. ineaiisol a suilieieiit amount ot' frietion brought about by a Sulliciently high veloeity of new Wliile the iiuicl is bassine; tlirougli the valve seat` llt being. seen ifroin the foregoing, that tlie valve seat anti. seat elisir in all pressure reducing andregulating valves of vvliatever type or inalre soon become Worn and unable to fully perform their required serv! ice; it follows, that it is very desirable to Speeication. of Letters Iiateii'. Atoll, T916.

Serial le.

have -pressure reeulating valve so constructed tliat tbe valve seat snol seat disk may be ouielrly and inexpensively removed anrl replaeeflv Whenever they become fouled or obstructed by foreign matter, or Worn to rlegree Where tliey will not close tight ivlien the outlet fluid iovv has been greatlyJ diminished or entirely stopped.

''.o aceoiiiplisli tbe last named object We have provided an improved form oi" valve seat, and valve seat flislr as clearly set forth iii tlie annex-eel specification and drawings, in. ui'liieli, y

Figure 1 is a seetioiial elevation through line o'lB Fig. 2.' Fig. 2, is a plan view of tlie loiver cliainberecl easing portion Wit-li the upper casing portion and diaphragm removed. liig. 3, is a plan view or' the inlet connection and guide Way for the slirlably inountefl valve, with tbe valve inserte. Fig. e, 'is a plan and sectional view slioiviiier detailed construction of the lever. Fig'. 5 is a plan, and sectional elevation sbo fing detail construction ol" the valve proper with the double, or reversible seat disks.

Similar referenee numerals refer to corresponding parts 'throughout the several views. i

.ln llig. 1, tbe liigli or initial pressure oonneetion is at l0, and the regulated outlet pressure connection is at 11, the slielably niouiitecl vulve 12, being slioivnin a' closeol position against the valve seat 13, :pivotecl lever 1li, through the action of tlie ooinpressed spring 15 holding tlie valve dis-l1l 16,

tiglit against the seat 13.v The position of the valve disk 16 in relation to the seat 13,

as slioivii in llig. 1, is the normal position before tlie loading spring 17 has beensu-bjected to compression by the adjusting screw 18 through spring button 19, and is also the normal "position after spring l? liasbeen compressed to the predetermined degree and the regulated luirl pressure has reacliecl its maximum "point, and caused tl'ie 'diaphragm 20, to be raisecl against the pressure plate i 21 until tlie diaphragm is no longer in ing tlirougli pressure 4lplate 21, forces eliaforce ehe en iefeby permigieeeme ae l) te ic Miel pressure restereal manne?? simi 1r :veli

' 'Ove "En and erecl'ng @when el" vaiieus fluids, ehe ieee 13, -imam mage mede of e much mare expeiisiw in casing re i3 and er eieWe-ci therein ctie/n l@ '.8 above being ezipe. bly meuneei ebiy ei a polygonal vente i2 which im@ passage lirougli emiees I 'e 12, may if pfe- De meile i' le e iioy to closely ne c flindieel gelding ponction 28, in

which eae radial Cles Weuld be p'iovided 45, fw )eriiiii-,tlie fini Elow lsrouglitlie cylindical ywills of guihng 'portion 28 on a plane level with? (if t ebeve the sea?, 13..

Valve l2 show 'uli zi Seadisl; 167 ei seme Suialnle ,geteiiel such ae half lie-'51 zfailiiber, ei' asbeeisee, ifviiile Le opposite eene Shaped. seat 3G iuegel 4elife leech/* l, if pfefeirecl, the povidecl With e mmeial, er boli meiceial as found emirolling the Phe flew ei such luiels lesive action en ehe d? in riewing upward igli the spaces e 2G and @euse way of seme, 1 glieli Wea. iig er ceti-ing am wreeclefl peiftion 26 bread ef *wifle 'die course outlet #from 'die r- 28? miel eliser ie A eyed-ing zweien en Hei/ing clesei'ife-ii construction emi eperatien of a valve embodying oui' impi'oemex 7 we claim.T l. ln e Fce vive? Qombieaiioi in dy-Hei an 21ml 1d low i" lease en: c: Bibel-eil C2i-ein Hensel ly seeziias L @lenig *901509.37 lieiveei salti diepere leven l' lei-rei e l il i A in seid iemevel le cometon adaptecl- 'e liol. slidieg valve liecly having a valve disk et ies enel adjacent te wel ecleptecl te close said ,valve Seat,'e

eat enel, Miep-ted te but seid pive'efl leve;1 ee elle ene' eppesie ebutingg eonieciei with "alle diaphragm, means ec though sai pivotal lever Lo nomelly lollfi seid veli/'e cli l: closed "linee the valve' seein, adjustable means in seid uppei casing portici@ aclapted to normally force sai flia paieg clow'ewaie enti epee Seid Valve seat for the passage ef Qui@ whereby e, ieguleeel iluicl 7e will taime-cl, ii Seial le* meie. geiigien A ,i the eembineeien of levier: alla A e J pliiagm impei lonely sepeia .seid ing pei'eions, i et emi eutle; openings in Said lower CheLeIeCi easing potiom inlet opening aelepel Se receive, mpervieusly etain en outwardly removable inlet connection providing an integral Valve sea, a eyliiidrieel slifleway for a sliding polygonal 'sicle valve edepeel te i? mt.-

money close seid "sive seals, Seid Si. -if'alve comprising e, Seat Clisi: e?, each enel adapted i@ eemelly eleee sei V l egeiiiet. lie flow or" uicls, means Wi .lower chembeied eaeng 'periee abili;

valve and. said fliefghmgm for musing valve ee open close thi'eugli elle combined zweien el? the 'flui *pessue Wilb said. lewe? elieeliereel ceeiig peiiei and the euele, eeimecizien' liererem, and elle mljlitablemeeee upper easing poiacting G Seicl agen 32 'n pessufe 'egulaeing e0 ibinagien el" e uppe: eeemg poet-ien 4 e lewe? chamheei easing "portion, a eie, pliregm. impeviouely sepefaing' seiel Ceeieg peltiens, ieleJ and outlet openings iii ical peifiei en mici valve body opposite phragm, adjustable means for'loadin said diaphragm on its side oppositeto sai lever whereby a diminution of sure will cause said diaphragm to move said lever to permit 'anopening of the valve seat and renew the flow of fluid for restoring the reduced, or regulated pressure.

ARTHUR W. CASH. ELMER F. LEMMON. lVitnesses:

GEORGE G. GLORE,

G. L. MOORE.

the reduced pres- 15 

